2.11BSD#431 - /usr/man/cat3f/rand.0

RAND(3F)	    UNIX Programmer's Manual		 RAND(3F)


NAME
     rand, drand, irand - return random values

SYNOPSIS
     function irand (iflag)

     function rand (iflag)

     double precision function drand (iflag)

DESCRIPTION
     The newer random(3f) should be used in new applications;
     rand remains for compatibilty.

     These functions use rand(3C) to generate sequences of random
     numbers.  If iflag is '1', the generator is restarted and
     the first random value is returned.  If iflag is otherwise
     non-zero, it is used as a new seed for the random number
     generator, and the first new random value is returned.

     Irand returns positive integers in the range 0 through
     2147483647.  Rand and drand return values in the range 0.
     through 1.0 .

FILES
     /usr/lib/libF77.a

SEE ALSO
     random(3F), rand(3C)

BUGS
     The algorithm returns a 15 bit quantity on the PDP11; a 31
     bit quantity on the VAX.  Irand on the PDP11 calls rand(3C)
     twice to form a 31 bit quantity, but bit 15 will always be
     0.


Printed 11/26/99	  May 15, 1985				1